Bridge-gate



(No model.) 2` sheetssheen 11.

EMBYBR,

BRIDGE GATE. l

4 r Patented July 18,139.3.

(No Model.) 2 Sheets-Sheet E. MEYER.

BRIDGE GfATE.V

No. 501,523. Patented July'l, 1893,

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UNITEDA STATES PATENT OFFICE.

HENRY MEYER, OF CHICAGO, ILLINOIS.

BRI DvG-El-GATE.

SPECIFICATIONdorming part of Letters Patent No. 501,523, datedJuly 18,1893; v

Application iiled February 20. 1893i Serial No. 463,017; (No model.) i

.Tofu/ZZ wiz/omit mayconcern:

Beit known thatI, HENRY MEYER, at citizenof the United States, residing at Chicago, in the countyof Cook and State of Illinois, have invented certain new and useful Improvements in Bridge-Gates, of which the foli lowing is aspecification.

This invention relates to improvements in gates for draw-bridges and especially to that class off such gates, in-which the operation of closing them is done automatically.l by the action or movement ofthe bridge; and it consits incertain peculiarities of theconstruction, novel arrangement and operation of the various parts thereof, as will be hereinafter more fully set forth and specifically? claimed.

The objects of my invention are first, toE provide a bridge-gate whichl shall' be strongl and durable, simple and'inexpensive in construction, yet effective in operation; and second, such a gate which will-automatically close and open by reason of the movement of the bridge, and will be closed or opened thereby when the bridge is turned in either direction.

In order to enable others skilled in the art to which my invention pertains to make and use the same, I will now proceed to describe it, referring to the accompanying drawings, in Which- Figure l, is a plan View, partly in section, of a portion of one of the abutments or approaches to the bridge, showing the operating mechanisms and the gates closed or lowered. Fig. 2, is a view in front elevation, partly in section thereof. Fig. 3, is a view in front elevation, partly in section, of apart of the abutment or approach to the bridge, showing the bridge in position for traffic or travel, and the gates raised. Fig. 4, is a sectional view looking in the direction of the arrow, and taken on line '4, 4, of Fig. 3," showing the parts in position as they appear when the gates are raised and the bridge is open for travel. Fig. 5, is a like view looking in the same direction, and illustrating the position of the parts when the gates are lowered, and Fig. 6, is a detail perspective view of a portion of one of the gate-bars and its operating lever and connecting rod.

Similar letters refer to like parts through out the dierent views of the drawings.

j A,vrepresents the abutment o f the bridge, `'which' is for-medwith an olf-set` or step A', upon which are placeda number ofwheels-or rollers a, to facilitate the movement of the bridge in itsturnings. y Y

To the middle of the abutment A, and. at `the upper portion thereof is secured verticallyv a guide-piece B, which is formediwith a securing-pin C, which is passedthrough-suitiable openings and usually slots c, in the ycamvlevers D, and D', which levers are fulcrumed at suitable points,.as at d, to the face of the abutment.

Near each side of the abutment, and to the face or front thereof, is provided guider-ways secured to the levers near their outer ends;

As will be seen in Figs. 2 and 3 of the drawings, the levers D, and D', vare formed with a slight upward c,urveorbendformingasegmentf of a circle. Near the outer end of each ofthe. levers D, and D', is secured a lever D2, which extends at a right angle from the cam-levers along the sides of the abutment, and are fulcrumed thereto, as at CZ', and are pivotally connected at their outer ends to the rods F, which extend vertically into the hollow posts G, which are located on the upper surface of the abutment, and near its sides. The rods F, are secured to the bell-crank-levers H,whichV have their bearings in the posts Gr, land have secured to their ends the gate-bars I, which as shown in the drawings are preferablybifurcated, so as to stride the posts.

To the lower surface ot the bridge K, and near its end is secured a circular grooved track'l, within which the wheels or rollers a, travel. l track Z, and to the lower surface of the bridge is secured a bracket L,in the lower portion of which is journaled a roller or wheel M, which is adapted to travel on the cam-levers.

The operation of my device is simple and as follows: The various parts of my invention are located and arranged as before set forth, and when the bridge is open for travel the parts will assumethe positions indicated by continuous lines in Fig. 3. As soon as the bridge which is mounted on a pivot in its central portion and midway between the abut longitudinal slot b, within which operates a- E, in which operate suitable pins e, which'areY At a suitable point to the rear of theA IOO ments or approaches begins to turn, the roller M, on the bracket L, will glide over the upper surface of one of the cam-levers until it shall have reached the fulcrum point thereof, when by reason of the fact that the weight of the bridge is removed from the levers, and that the gates or bars I, over-balance the weight thereof, the said bars will be gently lowered to the horizontal position, indicated by dotted lines in Fig. 3, and will thus close the passageway to the bridge. As soon as the roller M, on the bracket L, is passed from either of the cam-levers, it is obvious that said levers will be raised to the position indicated by dotted lines in Fig. 3, and by continuous lines in Fig. 2, and that when in such a position the bridge is again turned that the roller M, will again impinge with one of the cam-levers and through its connecting pin C, and the guide-piece B, will cause the levers to be lowered to the position indicated by continuous lines in Fig. 3, and the bars I, which are connected as before stated to the bell-cranklevers I'I, and through the medium of the rods F, and levers D, to the cam-levers, will be raised to a vertical position, thus opening the passage-Way to the bridge for travel.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a bridge-gate the combination of a bridge having secured to its lower surface a roller, with two cam-levers, fulcrumed to the abutment and having near their inner ends longitudinal slots, and at their outer ends the levers D2, fulorumed to the sides of the abutment, the rods F, connected at their lower ends to the levers D2, and at their upper ends to the bell-crank-levers I-I, the securing-pin C, adapted to connect the cam-levers and to operate within their slots as Well as the slot of the guide-piece B, said piece secured to the abutment and having a vertical slot, the bellcrank-levers having the bearings in the posts G, and the bars or gates I,secured to the ends of the bell-crank-levers, substantially as and for the purpose set forth.

2. In a bridge-gate the combination of a bridge having secured to its lower surface the bracket L, having journaled therein the roller M, with the levers D, and D', fulcrumed to the abutment, and formed at their inner parts with an upward curve and provided with the slots c, and pins C, and e, to operate in the guide-ways or slots b, and E, respectively, said guide-ways located on the surface of the abutment, the levers D2, secured at one of their ends to the outer portions of the levers D, D', and at their other ends to the rods F, and fulcrumed to the sides of the abutment, the rod F, connected at their lower ends to the levers D2, and at their upper ends to the bellcrank-levers II, the bifurcated bars or gates I, and the bell-crank-levers having theirbearings in the posts and connected to said bars or gates, substantially as and for the purpose set forth.

In Witness whereof I have hereunto set my hand and afllxed my seal this 11th day of February, A. D. 1893.

HENRY MEYER. [L s] W'itnesses:

CHAs. C. TILLMAN, E. A. DUGGAN. 

